Balthazar wakes up one day in a prison cell, all his memories lost to him. Without any knowledge of his past, he joins his rescuers in the Chaos Tower to regain what he has lost. He spends time in the Chaos Tower with his new-found allies, fighting against enemies of man together as he tries to recover his memories of his past. But when he finally does with the help of some mysterious dreams, it turns out that not is all as simple as it seems with Balthazar. Faced with his past and his master's calls, what will Balthazar choose to do? And what about his friends in the Human Empire, fated to battle against all who work against humankind?